Nick Foles ain't a Franchise QB, Nick Foles like Cam Newton. Is not a passers first, they are tossers. Cams strength is that he is very smart and can read react to what the defense does. Fast enough that his tosser weakness evens out, and doesnt often act as a detriment to his inablity to be a passer. Foles is a tosser, until he finds a good rhythm, then he becomes a passer. Where he throws guys open and puts the ball only in where the receiver can get it.
He gets there when the defense feels the need to rush the passer more, rather than set in zones. He gains his rhythm and becomes deadly once he has it. That's the mark of a great offensive coordinator, and a D that sends other teams to quick 3 and outs. He cant go to a Miami, or Jacksonville and do that. Jacksonville got the talent but not the coaching. There he would only be slightly better than Bortles, as they would at least score touchdowns.
But he would be very turnover prone.